allergireaktio

Allergireaktio, also known as an allergic reaction, is an immune system response to a foreign substance, known as an allergen, that is typically harmless to most people. This reaction occurs when the immune system mistakenly identifies the allergen as a threat, leading to the release of histamines and other chemicals. The severity of an allergireaktio can vary widely, ranging from mild to life-threatening.

Common types of allergireaktio include:

1. Atopic dermatitis: An inflammatory skin condition characterized by red, itchy, and scaly patches.

2. Asthma: A respiratory condition that causes inflammation and narrowing of the airways, leading to difficulty breathing.

3. Allergic rhinitis: Inflammation of the nasal passages, often triggered by pollen, dust, or pet dander, causing symptoms such as sneezing, itching, and runny nose.

4. Food allergies: Reactions to specific foods, such as peanuts, milk, or shellfish, which can cause symptoms like hives, swelling, and difficulty breathing.

5. Anaphylaxis: A severe and potentially life-threatening reaction that can occur within minutes of exposure to an allergen. Symptoms may include rapid heartbeat, low blood pressure, difficulty breathing, and loss of consciousness.

Treatment for allergireaktio depends on the type and severity of the reaction. Mild symptoms may be managed with over-the-counter medications, while more severe reactions may require emergency medical intervention. Preventive measures, such as avoiding known allergens or using allergen-specific immunotherapy, can also help manage and reduce the risk of allergireaktio.